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Validation of the Surrogate Safety Assessment Model for Assessment of Intersection Safety

dc.contributor.authorVasconcelos, Luís
dc.contributor.authorNeto, Luís
dc.contributor.authorSeco, Álvaro
dc.contributor.authorSilva, Ana Bastos
dc.date.accessioned2015-02-03T14:59:33Z
dc.date.available2015-02-03T14:59:33Z
dc.date.issued2014
dc.description.abstractThe surrogate safety assessment model (SSAM) is a software application that reads trajectory files generated by microscopic simulation programs and calculates surrogate measures of safety. This approach eliminates the subjectivity associated with the conventional conflict analysis technique and allows assessment of the safety of a facility under a controlled environment before accidents occur. The specific goal of this research was to validate SSAM as a tool for accident prediction at urban intersections. Two methods were used for validation. The first method compared the simulated number of conflicts from the use of SSAM and the predicted number of injury accidents from analytic models in three reference intersection layouts (four-leg priority intersection, four-leg staggered intersection, and single-lane roundabout). The second method compared SSAM results with conflicts observed on site in four real intersections: two priority ones and two roundabouts. The results indicate that, despite some limitations related to the nature of current traffic microsimulation models, SSAM analysis is an extremely promising approach to assessing the safety of new facilities or innovative layouts.por
dc.identifier.doi10.3141/2432-01
dc.identifier.urihttp://hdl.handle.net/10400.19/2587
dc.language.isoporpor
dc.peerreviewedyespor
dc.publisherTransportation Research Board of the National Academiespor
dc.relation.publisherversionhttp://trb.metapress.com/content/k0tx34w761235885/?genre=article&id=doi%3a10.3141%2f2432-01
dc.titleValidation of the Surrogate Safety Assessment Model for Assessment of Intersection Safetypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceUnited States of Americapor
oaire.citation.endPage9por
oaire.citation.startPage1por
oaire.citation.titleTransportation Research Record: Journal of the Transportation Research Boardpor
oaire.citation.volume2432por
rcaap.rightsopenAccesspor
rcaap.typearticlepor

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